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Cooperative Spectrum Sensing for Dynamic Spectrum Access
2009 WRI International Conference on Communications and Mobile Computing, 2009In cognitive networks, cooperative spectrum sensing is employed to detect the presence of primary user quickly. In this paper, we study the sensing performance of a cognitive user U1 by allowing another cognitive user U2 to act as its relay. We vary the scaling factors (used by the relay U2 to amplify its received signal) of the unconstrained scheme ...
Yunxue Liu +5 more
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Deep Cooperative Sensing: Cooperative Spectrum Sensing Based on Convolutional Neural Networks
IEEE Transactions on Vehicular Technology, 2019In this paper, we investigate cooperative spectrum sensing (CSS) in a cognitive radio network (CRN) where multiple secondary users (SUs) cooperate in order to detect a primary user, which possibly occupies multiple bands simultaneously. Deep cooperative sensing (DCS), which constitutes the first CSS framework based on a convolutional neural network ...
Woongsup Lee, Minhoe Kim, Dong-Ho Cho
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Wavelet denoising in cooperative and NonCooperative spectrum sensing
ICT 2013, 2013Cognitive Radio has become an effective solution for the scarcity and the inefficient use of the spectrum. The performance of the cognitive radio (CR) system depends however on how well it can maximize the usage of the free bands without causing interference to primary users.
Hussein Kobeissi +2 more
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Cooperative Spectrum Sensing for Geo-Location Databases
2012Spectrum sensing techniques are the key components for identifying and exploiting unused radio spectrum resources in the perspective of the cognitive radio paradigm. Based on the centralized cooperative sensing techniques, vast generalized databases named geo-location databases (GL-DB) can be deployed in order to centralize sensing and general radio ...
Mauro Fadda +3 more
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Quantized cooperative spectrum sensing for Cognitive Radio
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013Cognitive Radio (CR) is proposed to maximize spectrum utilization. When the licensed user is not using the spectrum, CR will then use it to communicate among each other. Hence, spectrum sensing, a procedure to observe primary user's existence, is important to CR.
Warit Prawatmuang, Daniel K. C. So
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Privacy-preserving aggregation for cooperative spectrum sensing
Journal of Network and Computer Applications, 2019Abstract Cognitive radio technology has been proposed as a promising way to alleviate spectrum scarcity. In cognitive radio networks, cooperative spectrum sensing is an effective approach to improve spectrum-estimation accuracy. In this approach, a fusion center (FC) outsources sensing tasks to secondary users (SUs), and aggregates sensing reports ...
Yali Zeng +4 more
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Research on Adaptive Cooperative Spectrum Sensing
2016Aiming at the fact that the traditional single threshold energy detection in cognitive radio is likely to misjudge situations and then lead to the shortage of missing the spectrum access opportunities due to the low signal to noise ratio caused by single threshold, this paper proposes adaptive cooperative spectrum sensing method based on double ...
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An energy minimization algorithm for cooperative spectrum sensing
2015 International Symposium on Wireless Communication Systems (ISWCS), 2015We introduce an algorithm minimizing the consumed energy of a cooperative spectrum sensing-based cognitive radio network. The energy is minimized, while satisfying requirements for primary user protection and for secondary user data rate simultaneously, with respect to the powers for transmitting on control and data channels, the number of reported ...
Nhan Nguyen-Thanh +2 more
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An Improved Double-Threshold Cooperative Spectrum Sensing
2011Cognitive Radio is becoming a hot research topic in wireless communication field now, in which the spectrum sensing is one of the most critical technologies. In the double-threshold cooperative spectrum sensing, the fusion center collects the local decisions and observational values of the secondary users, and then makes the final decision to determine
Dengyin Zhang, Hui Zhang
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Reinforcement Learning-Based Cooperative Spectrum Sensing
2019In cognitive radio (CR) networks, the detection result of a single user is susceptible due to shadowing and multipath fading. In order to find an idle channel, the secondary user (SU) should detect channels in sequence, while the sequential detection may cause excessive overhead and access delay.
Wenli Ning +4 more
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